https://community.o2.co.uk/t5/Android/Network-unlock-key/m-p/578116#M26632 <P>What is the network unlock key, my phone fell into the sink and doesnt work so i put the sim in another phone because i want to upgrade my phone however there is another code i need to recieve via text to get my upgrade.</P> Tue, 03 Dec 2013 17:43:26 GMT Anonymous 2013-12-03T17:43:26Z https://community.o2.co.uk/t5/Android/Network-unlock-key/m-p/578116#M26632 <P>What is the network unlock key, my phone fell into the sink and doesnt work so i put the sim in another phone because i want to upgrade my phone however there is another code i need to recieve via text to get my upgrade.</P> Tue, 03 Dec 2013 17:43:26 GMT https://community.o2.co.uk/t5/Android/Network-unlock-key/m-p/578116#M26632 Anonymous 2013-12-03T17:43:26Z https://community.o2.co.uk/t5/Android/Network-unlock-key/m-p/578120#M26633 The phone you are using is locked to a different network.<BR />You need to contact that network to get the phone unlocked.<BR />You can upgrade in store which may be your easiest option. Tue, 03 Dec 2013 17:51:45 GMT https://community.o2.co.uk/t5/Android/Network-unlock-key/m-p/578120#M26633 MI5 2013-12-03T17:51:45Z https://community.o2.co.uk/t5/Android/Network-unlock-key/m-p/578196#M26641 If your no longer a customer on the network the phone is locked to then normally a standalone mobile shop or flea market stall will unlock for a fee. Tue, 03 Dec 2013 20:07:36 GMT https://community.o2.co.uk/t5/Android/Network-unlock-key/m-p/578196#M26641 Anonymous 2013-12-03T20:07:36Z